I may gain you may gain he may gain we may gain you may gain they may gain
V-ing form
I may be gaining you may be gaining he may be gaining we may be gaining you may be gaining they may be gaining
Perfect
I may have gained you may have gained he may have gained we may have gained you may have gained they may have gained
V-ing perfect
I may have been gaining you may have been gaining he may have been gaining we may have been gaining you may have been gaining they may have been gaining
Negation
Simple form
I mayn't gain you mayn't gain he mayn't gain we mayn't gain you mayn't gain they mayn't gain
V-ing form
I mayn't be gaining you mayn't be gaining he mayn't be gaining we mayn't be gaining you mayn't be gaining they mayn't be gaining
Perfect
I mayn't have gained you mayn't have gained he mayn't have gained we mayn't have gained you mayn't have gained they mayn't have gained
V-ing perfect
I mayn't have been gaining you mayn't have been gaining he mayn't have been gaining we mayn't have been gaining you mayn't have been gaining they mayn't have been gaining
Interrogative form
Simple form
may I gain? may you gain? may he gain? may we gain? may you gain? may they gain?
V-ing form
may I be gaining? may you be gaining? may he be gaining? may we be gaining? may you be gaining? may they be gaining?
Perfect
may I have gained? may you have gained? may he have gained? may we have gained? may you have gained? may they have gained?
V-ing perfect
may I have been gaining? may you have been gaining? may he have been gaining? may we have been gaining? may you have been gaining? may they have been gaining?
Interro-negative form
Simple form
mayn't I gain? mayn't you gain? mayn't he gain? mayn't we gain? mayn't you gain? mayn't they gain?
V-ing form
mayn't I be gaining? mayn't you be gaining? mayn't he be gaining? mayn't we be gaining? mayn't you be gaining? mayn't they be gaining?
Perfect
mayn't I have gained? mayn't you have gained? mayn't he have gained? mayn't we have gained? mayn't you have gained? mayn't they have gained?
V-ing perfect
mayn't I have been gaining? mayn't you have been gaining? mayn't he have been gaining? mayn't we have been gaining? mayn't you have been gaining? mayn't they have been gaining?